qemu-system-ppcemb -S -gdb tcp::3421 -L /root/cellos/src/arch/ppc32/ppc405/boot -nographic -M taihu -cpu 0x51210950 -kernel /root/cellos/output/cellos.bin &
sleep 1 
ddd --debugger powerpc-eabi-gdb --directory=/root/cellos/src -x gdb_commands /root/cellos/output/cellos.elf &
